export default function (fileName = '夜查房排班.xls', fileStream) {
  let blob = new Blob([fileStream], { type: 'application/vnd.ms-excel' });
  let a = document.createElement('a');
  let href = window.URL.createObjectURL(blob); // 创建链接对象
  a.href = href;
  a.download = fileName; // 自定义文件名
  a.click();
  window.URL.revokeObjectURL(href);
}
